Studies on chevron crickets: Tryposoma gen. nov. (Orthoptera, Anostostomatidae), a new genus from Tanzania

Abstract

A new genus, Tryposomagen. nov., is introduced to accommodate two African anostostomatid species formerly classified under the genus Libanasa Walker (Tryposoma kilomeni (Hemp & Johns) comb. nov. and Tryposoma brachyurum (Karny) comb. nov.). This taxonomic revision includes a key of the species. Detailed discussions on the genital structure of the newly described genus are also provided.

Studies on chevron crickets: Minarisoma gen. nov. (Orthoptera, Anostostomatidae), a new genus and a new species from South Africa

“…Within the framework of this study on chevron crickets, we introduce a new genus, aiming to elucidate the taxonomy of Onosandrus crassipes Brunner von Wattenwyl, 1888 and O. tigrinum Karny, 1929, alongside the description of a new species. This effort represents a continuation of previous contributions to the exploration of anostostomatids spearheaded by the primary author of this paper (Cadena-Castañeda and Cortés-Torres 2013, Gorochov and Cadena-Castañeda 2016, Cadena-Castañeda and Monzón-Sierra 2017, 2022a, b, Mendes et al 2020, Cadena-Castañeda and Hemp 2024.…”

“…Both genera share a comparable shape and organization of tibial spurs, especially those on the hind tibia. The internal genitalia in males of both genera features sclerotized plates of the dorsal lobe (SP.dl), a novel structure in Anostostomatidae genitalia previously observed only in the Lutosinae restricted to the Americas (Cadena-Castañeda et al 2022b, Cadena-Castañeda andHemp 2024). However, Minarisoma gen. nov. is smaller than Tryposoma.…”

“…Consequently, the country has been found to boast a rich diversity, with 34 recorded species distributed across eight genera. The current genera inhabiting South Africa include Bochus Péringuey, 1916 (1), Borborothis Brunner von Wattenwyl, 1888 (1), Henicus Gray, 1837 (5), Libanasa Walker, 1869 (4), Libanasidus Péringuey, 1916 (2), Nasidius Stål, 1876 (8), Onosandridus Péringuey, 1916 (4), and Onosandrus Stål, 1876 (9) (Cigliano et al 2023, Cadena-Castañeda andHemp 2024).…”